Tools / Timestamp Converter

Timestamp Converter

Convert Unix timestamps to dates and back — seconds or milliseconds, local or UTC.

Current Unix timestamp seconds live
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How to convert timestamps

  1. Paste a Unix timestamp to decode it, or pick a date to encode it.
  2. Ten-digit inputs are treated as seconds, thirteen-digit as milliseconds — automatically.
  3. Results show your local timezone, UTC and ISO 8601 side by side.

Frequently asked questions

Seconds or milliseconds?

Ten-digit timestamps are seconds, thirteen-digit are milliseconds — we detect automatically. Unix time counts from 1970-01-01 UTC.

Why does my timestamp show a different date?

Unix timestamps carry no timezone. We display them in your device's timezone plus UTC — a "difference" usually means the source was already in another timezone.

What is the 2038 problem?

Old 32-bit systems overflow in January 2038. Modern 64-bit systems — and this tool — are unaffected.